bayesfactor

Compute a crude Bayes factor for a point, interval, or comparison hypothesis
using approximate posterior draws recovered from a <code>qbrms_fit</code>.
This is deliberately simple and intended for exploratory use.

Provides a 'brms'-like interface for fitting Bayesian regression models
using 'INLA' (Integrated Nested Laplace Approximations) and 'TMB' (Template Model Builder).
The package offers faster model fitting while maintaining familiar 'brms' syntax and
output formats. Supports fixed and mixed effects models, multiple probability distributions,
conditional effects plots, and posterior predictive checks with summary methods compatible
with 'brms'. 'TMB' integration provides fast ordinal regression capabilities. Implements
methods adapted from 'emmeans' for marginal means estimation and 'bayestestR' for Bayesian
inference assessment. Methods are based on Rue et al. (2009) <doi:10.1111/j.1467-9868.2008.00700.x>,
Kristensen et al. (2016) <doi:10.18637/jss.v070.i05>, Lenth (2016) <doi:10.18637/jss.v069.i01>,
Bürkner (2017) <doi:10.18637/jss.v080.i01>, Makowski et al. (2019) <doi:10.21105/joss.01541>,
and Kruschke (2014, ISBN:9780124058880).

Tony Myers

qbrms

Quick Bayesian Regression Models Using 'INLA' with 'brms' Syntax

bayesfactor function

<dl><dt>object</dt>
<dd>A <code>qbrms_fit</code> object.</dd>
<dt>hypothesis</dt>
<dd>Character string, for example "Intercept &gt; 0",
"b_x = 0", or "b_x &gt; 0.2".</dd>
<dt>prior</dt>
<dd>Optional prior information (unused here, kept for API compatibility).</dd>
<dt>null</dt>
<dd>Numeric null value for point tests (default 0).</dd>
<dt>direction</dt>
<dd>One of "two-sided", "greater", "less" (kept for API compatibility).</dd>
<dt>rope</dt>
<dd>Optional numeric length-2 vector <code>c(lower, upper)</code> to
define a ROPE for point tests.</dd>
<dt>nsim</dt>
<dd>Number of posterior draws to simulate from the fitted summary.</dd>
<dt>verbose</dt>
<dd>Logical; print progress information.</dd></dl>

Arguments

Bayesian Hypothesis Testing (very simple approximations) — bayesfactor

<dl>

<dt>object</dt>
<dd>A <code>qbrms_fit</code> object.</dd>


<dt>hypothesis</dt>
<dd>Character string, for example "Intercept &gt; 0",
"b_x = 0", or "b_x &gt; 0.2".</dd>


<dt>prior</dt>
<dd>Optional prior information (unused here, kept for API compatibility).</dd>


<dt>null</dt>
<dd>Numeric null value for point tests (default 0).</dd>


<dt>direction</dt>
<dd>One of "two-sided", "greater", "less" (kept for API compatibility).</dd>


<dt>rope</dt>
<dd>Optional numeric length-2 vector <code>c(lower, upper)</code> to
define a ROPE for point tests.</dd>


<dt>nsim</dt>
<dd>Number of posterior draws to simulate from the fitted summary.</dd>


<dt>verbose</dt>
<dd>Logical; print progress information.</dd>

</dl>

bayesfactor: Bayesian Hypothesis Testing (very simple approximations)

Description

Usage

Value

Arguments